CVE-2026-81200 json
MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR
published 2026-08-29 2 mo ago modified 2026-08-31 2 mo ago also EUVD-2026-68063
- cvss
- 2.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.42 does not correctly restrict access to order information, allowing any user with the instructor role to read other users' order billing details, including name, email address, phone number and postal address, by enumerating order IDs.
Patch / fix
- Unknown MasterStudy LMS WordPress Plugin 3.7.42
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/1a4db76f-7043-4f9e-a584-17151d008ab1/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
| CNA | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
Affected products
- Unknown MasterStudy LMS WordPress Plugin
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
- Technology feeds
References
-
wpscan.com
/vulnerability/1a4db76f-7043-4f9e-a584-17151d008ab1/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-81200
- NVD CVE-2026-81200
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.